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Java dependency management for Jython
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README.rst

jip

Jip is the jython equivalent of pip to python. It will resolve dependencies and download jars for your jython environment.

License

jip itself is distributed according to MIT License .

Install

jip is required to run within virtualenv, which is a best practice for python/jython developers to created a standalone, portable environment.

Create virtualenv with jython:

virtualenv -p /usr/local/bin/jython jython-env

Activate the shell environment:

cd jython-dev
source bin/activate

Download and install jip with pip:

pip install jip

Usage

Install a Java package

jip will resolve dependencies and download jars from maven repositories. You can install a Java package just like what you do python with pip:

jip install <groupId>:<artifactId>:<version>

Take spring as example:

jip install org.springframework:spring-core:3.0.5.RELEASE

Resolve dependencies defined in a pom

jip allows you to define dependencies in a maven pom file, which is more maintainable than typing install command one by one:

jip resolve pom.xml

Resolve dependencies for an artifact

With jip, you can resolve and download all dependencies of an artifact, without grab the artifact itself (whenever the artifact is downloadable, for example, just a plain pom). This is especially useful when you are about to setup an environment for an artifact. Also, java dependencies for a jython package is defined in this way.

jip deps info.sunng.gefr:gefr:0.2-SNAPSHOT

Update snapshot artifact

You can use update command to find and download a new deployed snapshot:

jip update info.sunng.bason:bason-annotation:0.1-SNAPSHOT

Run jython with installed java packages in path

Another script jython-all is shipped with jip. To run jython with Java packages included in path, just use jython-all instead of jython

List

Use jip list to see artifacts you just installed

Remove a package

You are suggested to use jip remove to remove an artifact. This will keep library index consistent with file system.

jip remove org.springframework:spring-core:3.0.5.RELEASE

Currently, there is no dependency check in artifact removal. So you should be careful when use this command.

Clean

jip clean will remove everything you downloaded, be careful to use it.

Search

You can also search maven central repository with a jip search [keyword]. The search service is provided by Sonatype's official Maven search .

Configuration

You can configure custom maven repository with a dot file, jip will search configurations in the following order:

  1. $VIRTUAL_ENV/.jip, your virtual environment home
  2. $HOME/.jip, your home

Here is an example:

[repos:jboss]
uri=http://repository.jboss.org/maven2/
type=remote

[repos:local]
uri=/home/sun/.m2/repository/
type=local

[repos:central]
uri=http://repo1.maven.org/maven2/
type=remote

Be careful that the .jip file will overwrite default settings, so you must include default local and central repository explicitly. jip will skip repositories once it finds package matches the maven coordinator.

From 0.4, you can also define repositories in pom.xml if you use the resolve command. jip will add these custom repositories with highest priority.

Distribution helpers

From 0.4, you can use jip in your setup.py to simplify jython source package distribution. Create pom.xml in the same directory with setup.py. Fill it with your Java dependencies in standard way. In this file, you can also define custom repositories. Here is an example:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

    ...

    <dependencies>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.6.1</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.6.1</version>
        </dependency>

        ...

    </dependencies>

    <repositories>
        <repository>
            <id>sonatype-oss-sonatype</id>
            <url>http://oss.sonatype.org/content/repositories/snapshots/</url>
        </repository>
    </repositories>
</project>

And in your setup.py, use the jip setup wrapper instead of the one provided by setuptools or distutils. You can add keyword argument pom to specify a custom name of the pom file.

from jip.dist import setup

Other than the traditional pom configuration, jip also allows you to describe dependencies in python. You can define a data structure in your setup.py like:

requires_java = {
    'dependencies':[
        ## (groupdId, artifactId, version)
        ('org.slf4j', 'slf4j-api', '1.6.1'),
        ('org.slf4j', 'slf4j-log4j12', '1.6.1'),
        ('info.sunng.soldat', 'soldat', '1.0-SNAPSHOT'),
        ('org.apache.mina', 'mina-core', '2.0.2')
    ],
    'repositories':[
        ('sonatype-oss-snapshot', 'http://oss.sonatype.org/content/repositories/snapshots/')
    ]
}

And pass it to jip setup as keyword argument requires_java. Once jip found this argument, it won't try to load a pom file.

from jip.dist import setup
setup(
    ...
    requires_java=requires_java,
    ...)

Another resolve command was added to setuptools, you can use this command to download all dependencies to library path

jython setup.py resolve

All dependencies will be installed when running

jython setup.py install

So with jip's setup() wrapper, pip will automatically install what your package needs. You can publish your package to python cheese shop, and there is just one command for everything

pip install [your-package-name]

Change Notes

0.4 (2011-04-15)

  • New commands available: search, deps, list, remove
  • New feature jip.dist for setuptools integration
  • Dependency exclusion support, thanks vvangelovski
  • Allow project-scoped repository defined in pom.xml and setup.py
  • Code refactoring, now programming friendly
  • README converted to reStructuredText
  • Migrate to MIT License

0.2.1 (2011-04-07)

  • Improved console output format
  • Correct scope dependency management inheritance
  • Alpha release of snapshot management, you can update a snapshot artifact
  • Environment independent configuration. .jip for each environment
  • Bug fixes

0.1 (2011-01-04)

  • Initial release

Links

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